VAN KAMPEN HARBOR FUND

Supplement dated April 30, 2010
to each of the
Summary Prospectus dated April 30, 2010
and the
Prospectus dated April 30, 2010

On October 19, 2009, Morgan Stanley, the parent company of Van Kampen Investments Inc., announced that it has reached a definitive agreement to sell substantially all of its retail asset management business to Invesco Ltd. (“Invesco”). The transaction (“Transaction”) affects the part of the asset management business that advises funds, including the Van Kampen family of funds. The Transaction is subject to certain approvals and other conditions to closing, and is currently expected to close in mid-2010.

Under the Investment Company Act of 1940, the closing of the Transaction will cause the Fund’s current investment advisory agreement with Van Kampen Asset Management, a subsidiary of Van Kampen Investments Inc., to terminate. In connection with the Transaction, the Fund’s Board of Trustees (the “Board”) has approved, subject to shareholder approval, that the Fund be transitioned to the Invesco mutual fund platform by transferring the assets and liabilities of the Fund to a newly formed fund (the “Acquiring Fund”), advised by an affiliate of Invesco, that has substantially the same investment objective, principal investment strategies and risks as the Fund (the “Reorganization”). The proposed Reorganization will be presented to shareholders of the Fund at a special meeting of shareholders. If shareholders of the Fund approve the Reorganization and certain other conditions to the closing of the Transaction are met, shareholders of the Fund will receive shares of the Acquiring Fund in exchange for their shares of the Fund. Upon completion of the proposed Reorganization, the Fund will dissolve pursuant to a plan of dissolution adopted by the Board.

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HARSPT 4/10